Apple USB Ethernet adapter vs its cheap knockoff

Apple adapter has a higher throughput of 94.3Mbps, compared favourably with builtin ethernet at 94.8Mbps. The cheap adapter measured 87.4Mbps. In addition to higher throughput, Apple adapter has a metal shielding from interference and has a genuine ASIX AX88772ALF USB to Ethernet bridge chip.

Clearly you pay for what you get, but it does not mean the cheap clone is not usable.